Vibrating exercise device



FIG. 1 is a perspective view of a vibrating exercise device illustrating my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a first side thereof;

FIG. 5 is a second side thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines illustrate portions of the vibrating exercise device which form no part of the claimed design. 

The ornamental design for a vibrating exercise device, as shown and described. 